Advise me how to open the picture.

Hi, people. I as you already guessed, the beginner here, and at me as the silly question can seem to you. My friend from Montenegro sent me our old photo where all of us are still teenagers, and I told that I beautifully processed it in Adobe Photoshop, but I cannot open it because it hangs up and writes an error: the unknown or inadmissible token type is found. I asked it in what a problem, it once again sent me the photo and told that everything shall be as shall be, but Photoshop repeats this error again. I can also absolutely inexperienced, but not silly, prompt as to open for me this a pattern, important for me.

I think the best thing to do is have your friend send you the picture in a different file such as jpg or png. That way you don't need to figure out what the problem is with the photoshop file, but you could still open it in photoshop if you wanted.

Instructions which can help you:
1) Open Photoshop.
2) Press and hold "Alt," "Control" and "Shift" at the same time as the program launches.
3) Select the option to delete all current settings. All the preferences and settings you have altered will be returned to their original default.
4) Close all applications and navigate to your Photoshop plug-in folder. The location of this will depend on the version of Windows you're using. If you're using a 32-bit edition, you'll find it at "C:/Program Files/Adobe/Adobe Photoshop CS5 or CS4/Plug-Ins." If you're using a 64-bit edition, you'll find it either at "C:/Program Files (x86)/Adobe/Adobe Photoshop CS5 or CS4/Plug-Ins" or "C:/Program Files/Adobe/Adobe Photoshop CS5 or CS4/Plug-Ins."
PSD recovery online
Try drag and dropping the image in a web browser.
After the browser opens the image, right click and save the image.
Then try opening it in Photoshop.

Another method:
You said that you can open it in paint.NET, you can open the image in paint.NET and do save as...and save it as a new file.
Then try opening that new file in Photoshop.

Those two methods as a rule give a result; otherwise, you may use PSD recovery online by other ways like